Introduction to Geographic Edition Software

Oracle Solaris Cluster Geographic Edition (Geographic Edition) software is a layered extension of
the Oracle Solaris Cluster software. The Geographic Edition software protects applications from unexpected
disruptions by using multiple clusters that are separated by long distances and by
using a redundant infrastructure that replicates data between these clusters. The clusters can be
global clusters, zone clusters, or a combination of both. Data replication software enables
applications that are running on a Geographic Edition cluster to tolerate disasters by
migrating services to a geographically separated secondary cluster. A disaster such as an
earthquake, a fire, or a storm might disable the cluster at the primary
site. If a disaster occurs, the Geographic Edition cluster can continue to provide
services by using the following levels of redundancy:

A secondary cluster

Duplicated application configuration on the secondary cluster

Replicated data on the secondary cluster

This chapter gives a high-level overview of the Geographic Edition product. It contains
the following sections: